// pages/recommendSong/recommendSong.js
import pubsub from 'pubsub-js'
import request from '../../utils/request.js'
Page({

  /**
   * 页面的初始数据
   */
  data: {
    day:'',
    month:'',
    recommendList:[],
    index:0
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    let userInfo=wx.getStorageSync('userInfo')
    if(!userInfo){
      wx.showToast({
        title: '请先登录',
        icon:'none',
        success:()=>{
          wx.reLaunch({
            url: '/pages/login/login',
          })
        }
      })
    }
    this.setData({
      day:new Date().getDate(),
      month:new Date().getMonth()+1
    })
    this.getRecommendList()

    pubsub.subscribe('switch',(msg,type)=>{
      let { recommendList,index}=this.data;
      if(type === 'pre'){
        (index===0)&&(index=recommendList.length)
        index -= 1
      }else{
        (index === recommendList.length-1) && (index=-1)
        index += 1
      }
      this.setData({
        index
      })
      let musicId=recommendList[index].id
      pubsub.publish('musicId',musicId)
    })
  },

  async getRecommendList(){
    let recommendListData = await request('/recommend/songs')
    this.setData({
      recommendList:recommendListData.recommend
    })
  },

  toSongDetail(e){
    let {song,index}=e.currentTarget.dataset
    this.setData({
      index
    })
    wx.navigateTo({
      // 参数过长会被直接接去掉，选取需要的进行传参
      url: '/pages/songDetail/songDetail?musicId='+song.id,
    })
  },
  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  }
})